Resource caps in battle
Yes. The current caps are:
- Gold: 110
- Souls: 40
- Treasure Maps: 10
Bonuses can still be applied
The cap can be raised when you wear Armor that increases the amount of the resources earned from battle.
Wearing Dragon Armor (which has a Gold bonus of 100%) will increase the Gold cap from 110 to 220, because Dragon Armor also has the Soul Bonus (of 50%) the cap for Souls would increased from 40 to 60.
Armor doesn't give bonuses to Treasure Maps but using the troop- Tyri, in battle would increase the Treasure Map cap from 10 to 20.